<h3 id="classes-219-218">Changes in classes</h3>
<table><tbody>
<tr>
    <th>What Changed</th>
    <th>How Changed</th>
</tr>
    <tr>
        <td>Magento\Usps\Setup\InstallData</td>
        <td>Class was removed.</td>
    </tr>
    <tr>
        <td>Magento\PageCache\Observer\FlushFormKeyOnLogout</td>
        <td>Class was removed.</td>
    </tr>
</tbody></table>
